Site Layout
Site Layout allows you to select a page template for one or more pages in your site, or convert them to Preformatted. For a description of Freeform, Static, and Preformatted pages see Page Types.
The Site Layout user-interface is the same one used during site creation. Use the tree on the left to navigate the template directory. Once a category is selected from the tree, click on a thumbnail (or the Preview link) to see how the template will look with the page you are currently editing (or Home if you were not editing a page). When you find a template you like, click Select at the top. You can also click Select under any thumbnail without previewing. If you are editing a page when you click Site Layout, you will be given the choice of updating just that page or all pages.
For a description of the differences between Site Layout and Page Layout see Page Layout.